42251413213 has 2 divisors, whose sum is σ = 42251413214. Its totient is φ = 42251413212.

The previous prime is 42251413201. The next prime is 42251413223. The reversal of 42251413213 is 31231415224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39250345689 + 3001067524 = 198117^2 + 54782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42251413213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42251413223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21125706606 + 21125706607.

It is an arithmetic number, because the mean of its divisors is an integer number (21125706607).

Almost surely, 2^42251413213 is an apocalyptic number.

It is an amenable number.

42251413213 is a deficient number, since it is larger than the sum of its proper divisors (1).

42251413213 is an equidigital number, since it uses as much as digits as its factorization.

42251413213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

Adding to 42251413213 its reverse (31231415224), we get a palindrome (73482828437).

The spelling of 42251413213 in words is "forty-two billion, two hundred fifty-one million, four hundred thirteen thousand, two hundred thirteen".